Cross Browser Flash Detection in Javascript

Question

Does anyone have an example of script that can work reliably well across IE Firefox to detect if the browser is capable of displaying embedded flash content  I say reliably because I know its not possible 100  of the time

User · Answer

Detecting and embedding Flash within a web document is a surprisingly difficult task.

I was very disappointed with the quality and non-standards compliant markup generated from both SWFObject and Adobe's solutions. Additionally, my testing found Adobe's auto updater to be inconsistent and unreliable.

The JavaScript Flash Detection Library (Flash Detect) and JavaScript Flash HTML Generator Library (Flash TML) are a legible, maintainable and standards compliant markup solution.

-"Luke read the source!"

User · Answer

If you just wanted to check whether flash is enabled  this should be enough   function testFlash          var support   false         IE only     if  ActiveXObject  in window             try              support      new ActiveXObject  ShockwaveFlash ShockwaveFlash              catch e               support   false                   W3C  better support in legacy browser       else            support     navigator mimeTypes  application x-shockwave-flash                return support       Note  avoid checking enabledPlugin  some mobile browser has tap-to-enable flash plugin  and will trigger false negative

User · Answer

SWFObject is very reliable   I have used it without trouble for quite a while

User · Answer

Code for one liner isFlashExists variable     lt script type  text javascript      src    ajax googleapis com ajax libs swfobject 2 2 swfobject js  gt   lt  script gt    lt script type  text javascript  gt     var isFlashExists   swfobject hasFlashPlayerVersion  1     true   false      if  isFlashExists        alert   flash exists         else       alert   NO flash          lt  script gt    Note that there is an alternative like this  swfobject getFlashPlayerVersion

User · Answer

Using Google Closure compiler goog require  goog userAgent flash   library I created this 2 functions   boolean hasFlash    Returns if browser has flash   function hasFlash        var b    1      function c a   if  a   a match    d   g    a length   3         function         if  navigator plugins  amp  amp  navigator plugins length            var a   navigator plugins  Shockwave Flash            if  a  amp  amp   b    0  a description    c a description  return           if  navigator plugins  Shockwave Flash 2 0     b    0 return             if  navigator mimeTypes  amp  amp  navigator mimeTypes length  amp  amp   a   navigator mimeTypes  application x-shockwave-flash    b      a     a enabledPlugin     c a enabledPlugin description  return       if   undefined     typeof ActiveXObject            try               var d   new ActiveXObject  ShockwaveFlash ShockwaveFlash 7   b    0 c d GetVariable   version    return            catch  e             try               d   new ActiveXObject  ShockwaveFlash ShockwaveFlash 6   b    0              return            catch  e             try               d   new ActiveXObject  ShockwaveFlash ShockwaveFlash    b    0  c d GetVariable   version               catch  e                         return b      boolean isFlashVersion version   Returns if the flash version is greater than provided version  function isFlashVersion version        var e   String prototype trim   function a   return a trim      function a   return     s xa0     s S      s xa0     exec a  1        function f a  b   return a  lt  b   -1   a  gt  b   1   0       var h    1 l           function m a   a   a match    d   g  if   a   return    a length   3 return a join            function             if  navigator plugins  amp  amp  navigator plugins length                var a   navigator plugins  Shockwave Flash                if  a  amp  amp   h    0  a description    l   m a description  return              if  navigator plugins  Shockwave Flash 2 0     h    0 l    2 0 0 11  return                    if  navigator mimeTypes  amp  amp  navigator mimeTypes length  amp  amp   a   navigator mimeTypes  application x-shockwave-flash    h      a     a enabledPlugin     l   m a enabledPlugin description  return          if   undefined     typeof ActiveXObject                try                   var b   new ActiveXObject  ShockwaveFlash ShockwaveFlash 7   h    0 l   m b GetVariable   version    return               catch  g                 try                   b   new ActiveXObject  ShockwaveFlash ShockwaveFlash 6   h    0 l    6 0 21  return               catch  g                 try                   b   new ActiveXObject  ShockwaveFlash ShockwaveFlash    h    0  l   m b GetVariable   version                  catch  g                             var n   l      return  function a            var b   0 g   e String n   split               a   e String a   split               for  var p   Math max g length  a length   k   0  0    b  amp  amp  k  lt  p  k                  var c   g k        d   a k                     do                   c      d    D        exec c                      d      d    D        exec d                                       if  0    c 0  length  amp  amp  0    d 0  length   break                  b   f 0    c 1  length   0   parseInt c 1   10   0    d 1  length   0   parseInt d 1   10      f 0    c 2  length  0    d 2  length     f c 2   d 2   c   c 3  d   d 3                while  0    b                     return 0  lt   b        version

User · Answer

Minimum version I ve ever used  doesn t check version  just Flash Plugin    var hasFlash   function         return  typeof navigator plugins     undefined     navigator plugins length    0       new ActiveXObject  ShockwaveFlash ShockwaveFlash      navigator plugins  Shockwave Flash

User · Answer

Have created a small  swf which redirects  If the browser is flash enabled it will redirect   package com play48 modules standalone util   import flash net URLRequest    class Redirect     static function main          flash Lib getURL new URLRequest  http   play48 com flash html      self

User · Answer

If you are interested in a pure Javascript solution  here is the one that I copy from Brett   function detectflash        if  navigator plugins    null  amp  amp  navigator plugins length  gt  0           return navigator plugins  Shockwave Flash    amp  amp  true            if  navigator userAgent toLowerCase   indexOf  webtv             return true            if  navigator appVersion indexOf  MSIE    amp  amp    navigator userAgent indexOf  Opera             try              return new ActiveXObject  ShockwaveFlash ShockwaveFlash    amp  amp  true            catch e              return false

User · Answer

View the source at http   whatsmy browsersize com  lines 14-120    Here is the abstracted cross browser code on jsbin for flash detection only  works on  FF IE Safari Opera Chrome

User · Answer

To create a Flash object standart-compliant  with JavaScript however   I recommend you take a look at  Unobtrusive Flash Objects  UFO    http   www bobbyvandersluis com ufo index html

User · Answer

what about   var hasFlash   function         var flash   false      try          if new ActiveXObject  ShockwaveFlash ShockwaveFlash                 flash true                 catch e           if navigator mimeTypes   application x-shockwave-flash       undefined               flash true                      return flash

User · Answer

Perhaps adobe s flash player detection kit could be helpful here   http   www adobe com products flashplayer download detection kit

User · Answer

You could use closure compiler to generate a small  cross-browser flash detection        ClosureCompiler       compilation level ADVANCED OPTIMIZATIONS     output file name default js     formatting pretty print     use closure library true       ClosureCompiler       ADD YOUR CODE HERE goog require  goog userAgent flash    if  goog userAgent flash HAS FLASH        alert  flash version    goog userAgent flash VERSION    else      alert  no flash found        which results in the following  compiled  code   var a    1      b        function c d        d   d match    d   g       d length   3      return d join        if  navigator plugins  amp  amp  navigator plugins length        var e   navigator plugins  Shockwave Flash        e  amp  amp   a    0  e description  amp  amp   b   c e description         navigator plugins  Shockwave Flash 2 0    amp  amp   a    0  b    2 0 0 11     else       if  navigator mimeTypes  amp  amp  navigator mimeTypes length            var f   navigator mimeTypes  application x-shockwave-flash             a   f  amp  amp  f enabledPlugin   amp  amp   b   c f enabledPlugin description         else           try               var g   new ActiveXObject  ShockwaveFlash ShockwaveFlash 7                    a    0                  b   c g GetVariable   version              catch  h                try                   g   new ActiveXObject  ShockwaveFlash ShockwaveFlash 6    a    0  b    6 0 21                catch  i                    try                       g   new ActiveXObject  ShockwaveFlash ShockwaveFlash    a    0  b   c g GetVariable   version                      catch  j                                     var k   b  a   alert  flash version      k    alert  no flash found

User · Answer

I agree with Max Stewart   SWFObject is the way to go   I d like to supplement his answer with a code example   This ought to to get you started   Make sure you have included the swfobject js file  get it here     lt script type  text javascript  src  swfobject js  gt  lt  script gt    Then use it like so   if swfobject hasFlashPlayerVersion  9 0 115          alert  You have the minimum required flash version  or newer       else       alert  You do not have the minimum required flash version        Replace  9 0 115  with whatever minimum flash version you need   I chose 9 0 115 as an example because that s the version that added h 264 support   If the visitor does not have flash  it will report a flash version of  0 0 0   so if you just want to know if they have flash at all  use   if swfobject hasFlashPlayerVersion  1          alert  You have flash       else       alert  You do not flash  -

User · Answer

Detecting and embedding Flash within a web document is a surprisingly difficult task.

I was very disappointed with the quality and non-standards compliant markup generated from both SWFObject and Adobe's solutions. Additionally, my testing found Adobe's auto updater to be inconsistent and unreliable.

The JavaScript Flash Detection Library (Flash Detect) and JavaScript Flash HTML Generator Library (Flash TML) are a legible, maintainable and standards compliant markup solution.

-"Luke read the source!"

User · Answer

Carl Yestrau s JavaScript Flash Detection Library  here   http   www featureblend com javascript-flash-detection-library html      may be what you re looking for

User · Answer

I know this is an old post  but I ve been looking for a while and didn t find anything  I ve implemented the JavaScript Flash Detection Library  It works very well and it is documented for quick use   It literally took me 2 minutes  Here is the code I wrote in the header    lt script src  Scripts flash detect js  gt  lt  script gt   lt script type  text javascript  gt    if   FlashDetect installed        alert  Flash is required to enjoy this site                 else       alert  Flash is installed on your Web browser         lt  script gt

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